His vocals are definitely impressive; can't wait for the release of Catharsis, the falsettos are unreal
Dan is amazing.
holy shit he is amazing
God damn I love Dan.
Why, oh why, did he leave TesseracT?
Digging: Haste the Day - Coward
Why, oh why, did he leave TesseracT 
One was perfect.
Holy shit this is pretty fucking good!
such an underrated vocalist
Wouldn't say he underrated; most people seem to love him.
These videos make me wonder why he buries his voice under so many effect when he sings really well life.
Digging: Yersinia - Pafageltronen
Did he do the vocals on the album? Because I just listened to a few of the tracks a couple days ago when I got the album and remembered thinking the vocals sounded exactly like TesseracT
Yeah he did all the vocals on the 'Illusion' disc. Fantastic singer.
And he never fails to deliver:
Absolutely, and he's said he will re-record Catharsis because he wasn't too happy with it.